public static IWICMetadataQueryWriter CreateQueryWriter(this IWICImagingFactory imagingFactory, Guid guidMetadataFormat, Guid?pguidVendor = null)
{
using (var pguidVendorPtr = CoTaskMemPtr.From(pguidVendor))
{
return(imagingFactory.CreateQueryWriter(guidMetadataFormat, pguidVendorPtr));
}
}
public static IWICMetadataQueryWriter CreateQueryWriterFromReader(this IWICImagingFactory imagingFactory, IWICMetadataQueryReader pIQueryReader, Guid?pguidVendor = null)
{
using (var pguidVendorPtr = CoTaskMemPtr.From(pguidVendor))
{
return(imagingFactory.CreateQueryWriterFromReader(pIQueryReader, pguidVendorPtr));
}
}
public static IWICBitmapDecoder CreateDecoderFromStream(this IWICImagingFactory imagingFactory, IStream pIStream, WICDecodeOptions metadataOptions, Guid?pguidVendor = null)
{
using (var pguidVendorPtr = CoTaskMemPtr.From(pguidVendor))
{
return(imagingFactory.CreateDecoderFromStream(pIStream, pguidVendorPtr, metadataOptions));
}
}
public static IWICBitmapEncoder CreateEncoder(this IWICImagingFactory factory, Guid guidContainerFormat, Guid?pguidVendor = null)
{
using (var pguidVendorPtr = CoTaskMemPtr.From(pguidVendor))
{
return(factory.CreateEncoder(guidContainerFormat, pguidVendorPtr));
}
}
public static IWICBitmapDecoder CreateDecoderFromFilename(this IWICImagingFactory imagingFactory, string wzFilename, Guid?pguidVendor = null, WICDecodeOptions metadataOptions = WICDecodeOptions.WICDecodeMetadataCacheOnDemand)
{
using (var pguidVendorPtr = CoTaskMemPtr.From(pguidVendor))
{
return(imagingFactory.CreateDecoderFromFilename(wzFilename, pguidVendorPtr, StreamAccessMode.GENERIC_READ, metadataOptions));
}
}
public static void CopyPixels(this IWICBitmapSource bitmapSource, int cbStride, byte[] pbBuffer, WICRect?prc = null)
{
using (var prcPtr = CoTaskMemPtr.From(prc))
{
bitmapSource.CopyPixels(prcPtr, cbStride, pbBuffer.Length, pbBuffer);
}
}
public static void WriteSource(this IWICBitmapFrameEncode bitmapFrameEncode, IWICBitmapSource pIBitmapSource, WICRect?prc = null)
{
using (var prcPtr = CoTaskMemPtr.From(prc))
{
bitmapFrameEncode.WriteSource(pIBitmapSource, prcPtr);
}
}
public static IWICBitmapLock Lock(this IWICBitmap bitmap, WICBitmapLockFlags flags, WICRect?prcLock = null)
{
using (var prcLockPtr = CoTaskMemPtr.From(prcLock))
{
return(bitmap.Lock(prcLockPtr, flags));
}
}
public static WICBitmapPattern[] GetPatterns(this IWICBitmapDecoderInfo bitmapDecoderInfo)
{
int count;
int size;
bitmapDecoderInfo.GetPatterns(0, IntPtr.Zero, out count, out size);
if (count == 0)
{
return(new WICBitmapPattern[0]);
}
using (var buffer = new CoTaskMemPtr(Marshal.AllocCoTaskMem(size)))
{
bitmapDecoderInfo.GetPatterns(size, buffer, out count, out size);
IntPtr at = buffer;
var patterns = new WICBitmapPattern[count];
for (int i = 0, stride = Marshal.SizeOf(typeof(WICBitmapPatternRaw)); i < count; ++i, at += stride)
{
var raw = (WICBitmapPatternRaw)Marshal.PtrToStructure(at, typeof(WICBitmapPatternRaw));
int length = raw.Length;
patterns[i] = new WICBitmapPattern()
{
Length = length,
Position = raw.Position,
Pattern = new byte[length],
Mask = new byte[length],
EndOfStream = raw.EndOfStream
};
Marshal.Copy(raw.Pattern, patterns[i].Pattern, 0, length);
Marshal.Copy(raw.Mask, patterns[i].Mask, 0, length);
}
return(patterns);
}
}
